2663results about "Hot-water central heating" patented technology

The invention discloses a heating control system based on solar energy-heat pump-building collaborative optimization and a construction method, and belongs to the technical field of renewable energy source heating. Comprising a parameter acquisition module, a dynamic prediction module and an optimization control module. The method comprises the following steps: constructing a building heat transfer dynamic prediction model, a solar energy performance prediction physical model, constructing a ground source heat pump performance prediction model and a solar energy-ground source heat pump system collaborative optimization control model, and predicting and optimizing system operation parameters in the next day. Through cooperative work of the parameter acquisition module, the dynamic prediction module and the optimization control module, intelligentization and high efficiency of building heating are achieved, solar energy and the heat pump efficiency can be utilized to the maximum extent, the ground source heat pump efficiency is improved, and energy consumption is reduced while the indoor comfort degree is guaranteed. In addition, a time-of-use electricity price mechanism is utilized to further optimize system operation parameters, the system operation cost is reduced, and the energy efficiency and the response capability of the system are improved.

The invention discloses a low-vacuum circulating water heating dynamic load matching method based on AI regulation and control, and the method comprises the following steps: step S100, multi-source data real-time collection: building thermal environment parameters are synchronously collected through a temperature sensor array, a vacuum pressure transmitter, a flowmeter and an environment monitoring unit which are deployed in a distributed manner; according to the method, the control period is compressed to the minute level, compared with traditional PID control, the response speed is increased by several times, the indoor temperature can be controlled more accurately, and meanwhile the failure rate of equipment is reduced. According to the sudden weather coping mechanism, heat supply strengthening can be started 30 minutes ahead of time under extreme weather such as snowstorm weather, and the stability of the system is ensured. The method is characterized in that the prediction advantage of deep learning and the optimization capability of model prediction control are deeply combined, and the control problem of multivariable strong coupling of the low vacuum system is solved through a verification system of multi-source data fusion and virtual-real combination.

A system includes a first subsystem configured to produce a resource by consuming electricity, a second subsystem configured to produce the resource by consuming a fuel, and a controller. The controller is configured to determine an allocation of a predicted demand for the resource over a future time period between the first subsystem and the second subsystem based on a first carbon emissions rate associated with off-site production of the electricity and a second carbon emissions rate associated with on-site consumption of the fuel. The controller is also configured to control the first subsystem and the second subsystem to produce the resource in accordance with the allocation during the future time period.

The invention relates to a power plant waste heat recovery and heat storage type heating composite optimization method and system. A heat exchanger in the waste heat recovery system is accurately selected according to waste heat characteristics, a pipeline is insulated, and a sensor is arranged to be connected with a control system. The heat storage device is made of a composite heat storage material, is modularly designed and has intelligent heat charging and discharging control. The heating network comprises a water supply and return pipe network, a key node is provided with a sensor and a regulating valve, and a user side is provided with an intelligent heat meter. And establishing a collaborative optimization model, solving by adopting an intelligent algorithm, and developing an intelligent predictive control system. The energy utilization efficiency is improved by 20%, the heating quality is optimized, the room temperature uniformity is improved by 15%, the indoor temperature fluctuation is within + / -2 DEG C, meanwhile, the operation cost is reduced by 15%, environmental pollution is reduced, good economic and social benefits are achieved, and the method is suitable for the field of power plant waste heat utilization and heating.

The invention relates to the technical field of building energy conservation, in particular to an edge computing cooperative communication method for multiple heat pumps and a photovoltaic system, which comprises an edge server, a cloud server, multiple heat pumps, a variable frequency pump and an indoor and outdoor heat supply device, and is characterized in that the edge server realizes time synchronization of equipment through an OPC UA over TCSN protocol, a multi-level energy topology network is established, and the multi-level energy topology network is connected with the cloud server; in combination with physical energy flow and information flow, based on a building heat balance equation, an edge server controls a heat pump to work at an energy-saving operation point according to indoor and outdoor temperatures and user requirements, and the flow of a variable frequency pump is adjusted. In addition, multi-mode state sensing is achieved through the distributed sensor network, a layered self-adaptive control strategy is executed, photo-thermal collaborative optimization and heat pump group collaborative control are achieved, the system collaborative control precision is remarkably improved through the method, the time synchronization error is reduced by three orders of magnitude, and the system response speed reaches the millisecond level and is 10 times faster than that of a traditional system.

The invention belongs to the technical field of new energy development and utilization, and particularly relates to a rural residence geothermal gradient utilization heating system which comprises a water collecting pump arranged in a water collecting well and used for collecting geothermal water in the water collecting well; the settling tower is communicated with the water outlet end of the water collecting pump and is used for filtering and settling the geothermal water collected by the water collecting pump; the inlet end of the flash evaporation heat exchange system is communicated with the settling tower, and the flash evaporation heat exchange system is used for circulating geothermal water and enabling the geothermal water to exchange heat with the cascade heat supply system; the cascade heat supply system is used for supplying heat to the indoor system by utilizing heat obtained by heat exchange with geothermal water; a water heater; the stepped heat supply system conducts heat preservation on the outdoor water pipe through heat obtained through heat exchange with geothermal water. The problems that the heat exchanger is seriously scaled, the heat exchange effect is invalid, even the heat exchanger is corroded and the temperature of recharged geothermal tail water is high due to the fact that existing geothermal heating is directly conducted through a plate heat exchanger can be solved.

The invention relates to the technical field of heat supply control, in particular to a heat supply secondary network branch line intelligent hydraulic equilibrium method and device, a medium and a product. The method comprises the following steps: constructing a branch topological graph of a heat supply secondary network in a target heat supply area; the environment temperature is obtained in real time, the heat supply station is controlled to supply heat to each heating single body in the target heat supply area based on the dynamic flow control strategy, and the node flow and the node temperature of each node in the branch topological graph are collected; constructing a branch heat supply loss model of the branch topological graph based on the environment temperature, the node flow and the node temperature; the monomer temperature and heat supply backflow data of each heating monomer are obtained, and a monomer heating model is constructed for each heating monomer based on the environment temperature, the monomer temperature and the heat supply backflow data; and determining a flow regulation and control strategy based on the monomer heating model and the branch line heat supply loss model, and adjusting the monomer heat supply flow of the heat supply secondary network based on the flow regulation and control strategy. According to the method, heat supply hydraulic balance can be achieved through precise flow regulation and control precision.

The invention discloses a carnot cell cold, heat, electricity and fresh water combined supply system based on waste heat utilization. The system comprises a dual-pressure condensation heat pump cycle device, a heat storage cycle device, an organic Rankine cycle device, a lithium bromide absorption type refrigeration cycle device, a multi-stage flash evaporation seawater desalination device and a photovoltaic power generation device. Wherein the dual-pressure condensation heat pump circulating device is respectively connected with the heat storage circulating device, the lithium bromide absorption type refrigeration circulating device, the photovoltaic power generation device and the multi-stage flash evaporation seawater desalting device; the heat storage circulating device is also connected with the organic Rankine cycle device; the lithium bromide absorption type refrigeration circulating device is also connected with the multi-stage flash evaporation seawater desalting device; and the dual-pressure condensation heat pump circulating device is used for increasing the temperature of the waste heat so as to meet the operation requirements of the lithium bromide absorption type refrigeration circulating device or the multi-stage flash evaporation seawater desalting device. A large number of low-grade waste heat resources generated in industrial production are effectively utilized, and supply and demand matching of electric energy is adjusted.

The invention relates to the technical field of floor heating, and discloses an assembly type prefabricated floor heating module which comprises an upper prefabricated slab and a lower prefabricated slab matched with the upper prefabricated slab, second connecting strips are embedded into the left end and the right end of the upper prefabricated slab and the left end and the right end of the lower prefabricated slab, and first connecting strips are embedded into the front end and the rear end of the upper prefabricated slab and the front end and the rear end of the lower prefabricated slab. The first connecting strip comprises a square pipe, and a lead screw is arranged in the square pipe. The first connecting strip and the second connecting strip are embedded between the upper prefabricated slab and the lower prefabricated slab which are adjacent to each other, and are meshed in the splicing screw holes in the upper prefabricated slab and the lower prefabricated slab through the screw heads on the first connecting strip and the second connecting strip, so that the prefabricated floor heating modules are spliced together; after the prefabricated floor heating module is laid, the first connecting strip and the second connecting strip cannot be seen from the outside, only one hole needs to be formed between every two adjacent upper prefabricated plates, and therefore the neatness and attractiveness of the prefabricated floor heating module are guaranteed.

The present application relates to a system and method for supplying cascade energy using waste heat from a power plant during production. The waste heat from the power plant during production is connected to a heat source inlet of a lithium-bromide absorption chiller and to a waste water inlet of a waste water heat exchanger, and a heat source outlet of the lithium-bromide absorption chiller is connected to the waster water inlet of the waste water heat exchanger and to a water return port of the waste heat from the power plant during production; the lithium-bromide absorption chiller is connected to a chilled water intake line, a chilled water output line, a cooled water intake line and a cooled water discharge line, the cooled water discharge line is connected to a clean water side inlet of the waste water heat exchanger, and a clean water side outlet of the waste water heat exchanger is sequentially connected to a water purification device and a hot water tank; the clean water side inlet of the waste water heat exchanger is connected to a heating water return line, and the clean water side outlet of the waste water heat exchanger is connected to a heating water supply line; and a water outlet of the waste heat from the power plant during production is further connected to a heat source inlet of a solution regenerator, and a waste water outlet of the solution regenerator is connected to the water return port of the waste heat from the power plant during production. The system of the present application has high energy utilization efficiency, thus effectively expanding the range of waste-water waste heat utilization.

The invention discloses a heat supply pipe network hydraulic balance adjusting system and method integrated with an AI algorithm. The system comprises a multi-source data acquisition module, a data fusion module, an AI algorithm model module and an adjusting control module. The multi-source data acquisition module is a sensing basis and a decision-making basis source of the whole system and is used for acquiring multi-source data in real time; the data fusion module comprises a preprocessing module and an extraction fusion module. The invention belongs to the technical field of hydraulic balance adjustment of a heat supply pipe network, and aims to solve the problem that the prediction accuracy is reduced due to the fact that the valve opening is adjusted by depending on single fixed threshold data or artificial experience and dynamic factors of real-time weather are not fused in the prior art. The technical effects are that the weather data and the real-time data of the heat supply pipe network can be fused, the relevance and complementarity between different types of data are fully utilized, and the accuracy and efficiency of the hydraulic balance adjustment of the heat supply pipe network can be improved.

Device (1) for heating domestic water by thermal contact with a heating fluid, the device comprising a first chamber (10) and a second chamber (20) fluid-dynamically connected to the first chamber via a connecting opening (13), both the first chamber and the second chamber each having a supply opening (11, 21) and a removal opening (12, 22) for heating fluid, the first chamber being designed to store heating fluid in its interior in layers (14, 15, 16) lying one above the other in a stratification direction (19) according to the temperature of the heating fluid. Specific guidance of the flow of the heating fluid, on the one hand during layering into the first chamber and, on the other hand, during flowing into the second chamber, leads to high efficiency of heat transfer to the domestic water.Furthermore, the invention is directed to a heating system comprising the device, an operating method for the heating system, a single-layer device, and a heat exchanger device. The invention enables, for example, the implementation of various embodiments of the heating system and their operating methods using only a single pump.

The utility model discloses an integrated grading flash evaporation deep heat recovery device for high-salt, high-scale and high-corrosion slurry, and belongs to the technical field of industrial energy conservation and desulfurization slurry waste heat heat supply. According to the integrated equipment, in order to solve the problems that due to graded flash evaporation and graded heat removal, the final-stage vacuumizing difficulty is too large, equipment assemblies are too many, the occupied area is too large, the manufacturing cost is too high, and operation and maintenance are difficult, flash evaporation tanks are combined into an integral graded flash evaporation tank, and a flash evaporation steam heater is combined into an integral graded heater; furthermore, all the components are combined into an integrated tank body, and all functional areas are separated by adopting partition plates. A first-stage special micro-differential pressure vacuum pump is added, and non-condensable gas of the last-stage heater is pumped out and sent to an inlet of the previous-stage heater or a conventional vacuum pump; alkaline water is sprayed to a space, where non-condensable gas is enriched, of a final-stage heater to absorb SO2 and reduce partial pressure, so that the temperature of a concentrated slurry outlet and the smoke exhaust temperature of a final-stage flash tank can be greatly reduced. The device is suitable for the fields of coal-fired boilers, sintering machines and industrial kilns requiring waste heat recovery.

The invention discloses a building heat exchange unit with a protection function, relates to the technical field of heat exchange devices, and provides the following scheme that the building heat exchange unit comprises a fixed bracket, and further comprises a heat exchange mechanism, a protection mechanism and a control mechanism, and the heat exchange mechanism is arranged on one side of the top of the fixed bracket and used for building cold and hot water exchange; the water storage assembly is arranged on the other side of the top of the fixed support and used for storing building water; the monitoring and protecting mechanism is arranged on one side of the heat exchange mechanism and used for real-time monitoring during cold and hot water exchange treatment of the heat exchange mechanism, and the monitoring and protecting mechanism is connected with the heat exchange mechanism; and the circulating assembly is arranged on the fixed bracket. The cold and hot water exchange efficiency is improved, heat transfer is achieved, meanwhile, the stability of the heat exchanger in the operation process is guaranteed, vibration and noise generated in the operation process are reduced, equipment loss is reduced, the service life is prolonged, water backflow is prevented, the correct water flow direction is guaranteed, and stable operation of the system is maintained; pipeline blockage and influence on normal operation of equipment are avoided, and system water quality is guaranteed.

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

The utility model discloses a high-vacuum-degree micro-pressure-difference control device for desulfurization slurry grading flash evaporation heat recovery, and belongs to the technical field of coal-fired boiler waste heat heat supply. The system aims at solving the problems that when desulfurization slurry flash evaporation is adopted for boiler flue gas waste heat recovery, much non-condensable gas such as SO2 can escape due to heat release and condensation, the volume of a vacuum system is relatively large, and consequently the high vacuum degree is difficult to maintain by adopting a conventional vacuumizing device, a special micro-differential pressure vacuum pump is added, and the vacuum degree is reduced; extracting non-condensable gas on the liquid level of the condensed water of the last-stage heater, and sending the non-condensable gas to a front-mounted heater matched with the last-stage flash tank; when necessary, alkaline water can be sprayed to the space, where non-condensable gas is enriched, of the final-stage heater so as to comprehensively absorb SO2 and other components to reduce the partial pressure, so that the micro-differential pressure vacuum pump can stably maintain the high-vacuum state of the final-stage heater, the temperature of a concentrated slurry outlet of the final-stage flash tank is greatly reduced, and the concentration rate of the final-stage flash tank is increased. And optimal operation conditions are created for greatly reducing the exhaust gas temperature and greatly improving the waste heat recovery amount.

The present disclosure discloses a multi-energy coupled cooling / heating system for buildings in a long-term cooling region, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling / heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling / heating unit; the ground source heat pump cooling / heating unit is connected to the indirect evaporative cooling waste heat recovery unit. The present disclosure adopts double-water tank structure, designs based on stratification principle, so as to achieve heat source classification management.

The invention relates to a method for operating a hybrid combination heating appliance (200) for tempering a heating water flow (1) and a domestic hot water flow (2). A heat generator (206) and / or a heat pump heat exchanger (202) connected in series with it in a heating water circuit (208) temper the heating water flow (1), wherein the heat pump heat exchanger (202) can be connected to a heat pump (300) on the secondary side. The heating water flow (1) flows into a connectable, building-side section of a heating water circuit (400) or into a hydraulically parallel bypass (214) of the hybrid combination heating appliance (200) with a domestic hot water heat exchanger (216), wherein a valve device (220) directs the heating water flow (1) into the heating water circuit (400) or into the bypass (214).It is proposed that a control unit (204) detects a risk of icing at the heat pump heat exchanger (202) and / or at another heat exchanger (308) of the heat pump (300) and switches the valve assembly (220) depending on the detected risk of icing so that the heating water flow (1), in particular coming from the heat generator (206), flows through the bypass (214) and the heat pump heat exchanger (202). The heating water flow (1) is in particular greater than or equal to a predefinable minimum flow rate.

The utility model relates to the related technical field of heating and ventilation components, and discloses a water distributing and collecting assembly, a coil heat exchanger and heating and ventilation equipment, the water distributing and collecting assembly comprises a shell, a plurality of water inlet branch pipes and a plurality of water outlet branch pipes, and a water inlet channel and a water outlet channel are formed in the shell; the main water inlet and the main water outlet of the shell are located on the same side of the shell, the multiple water inlet branch pipes are arranged at intervals, the inlet ends of the water inlet branch pipes are connected with the shell and communicate with the water inlet channel, the water inlet branch pipes extend in the direction away from the shell from the inlet ends to the outlet ends, and the outlet ends of the water inlet branch pipes are used for being connected with the water inlet ends of coil pipes of the coil heat exchanger; the multiple water outlet branch pipes are arranged at intervals, the outlet ends of the water outlet branch pipes are connected with the shell and communicate with the water outlet channel, the water outlet branch pipes extend in the direction away from the shell from the inlet ends to the outlet ends, and the inlet ends of the water outlet branch pipes are used for being connected with the water outlet ends of the coil pipes. The water dividing and collecting assembly is simple in structure, few in parts and convenient to assemble, and the machining and assembling efficiency of the water dividing and collecting assembly is improved.

The invention provides a combined heat and power system and a control method thereof, and relates to the technical field of combined heat and power. The system comprises a fuel gas heat and power cogeneration subsystem, a heat supply subsystem and a fused salt heat storage subsystem, the fuel gas heat and power cogeneration subsystem is used for fuel gas power supply, the fused salt heat storage subsystem can convert solar energy and / or flue gas generated by power supply into heat energy of high-temperature fused salt to be stored, and the heat supply subsystem conducts primary heating on heat supply return water through geothermal energy; and flue gas and / or high-temperature fused salt generated by power supply are / is used for conducting secondary heating on heat supply return water. Geothermal energy, solar energy and fused salt heat storage are coupled, and renewable energy sources are fully utilized for heat and power cogeneration, so that the power supply requirement and the heat supply requirement of a user are met. In the ground source heat pump unit, primary heating is conducted through geothermal energy, heat supply return water is heated into warm water, then the warm water is secondarily heated into hot water through smoke in the gas heat and power cogeneration system, the compression ratio of a compressor in a ground source heat pump can be reduced, and power consumption of the compressor is reduced.

The invention discloses an air source heat pump unattended control method and system, and relates to the field of equipment control, and the method comprises the steps: predicting a load demand according to an environment parameter and a building load parameter, and calculating a target water supply temperature based on the load demand; sorting the heat pump units according to the equipment operation duration parameters, distributing a temperature deviation value for each heat pump unit, and calculating the target water supply temperature and the temperature deviation value corresponding to the heat pump unit to obtain the personalized set temperature of each heat pump unit; a starting instruction sequence is generated according to a preset starting condition and the personalized set temperature, and after the water return pressure parameter reaches a preset parameter threshold value after the circulating water pump is started, all the heat pump units are sequentially started according to the personalized set temperature sequence; and a make-up pump and a pressure release valve are controlled according to the return water pressure parameter and the liquid level parameter, and the temperature deviation value of each heat pump unit is adjusted according to the change of the environment parameter and the building load parameter. By implementing the method, the balance of equipment loads in the multi-unit system can be improved.

The application discloses a supplemental combustion type flue gas molten salt heat exchanger and a working mechanism thereof, characterized in that: a supplemental combustion device is added in the upstream of a flue gas molten salt heat exchanger, the supplemental combustion device is connected with the flue gas molten salt heat exchanger through a flue, and a supplemental combustion type flue gas molten salt heat exchange integrated device is formed; the device comprises a supplemental combustion device or a supplemental combustion device, and a first-stage flue gas molten salt heat exchange component. The application can realize the functions of more uniform and efficient supplemental combustion heat transfer in the flue gas, realize a safer ignition mode of the supplemental combustion gas or the mixed body of the atomized supplemental combustion gas and liquid (or gas powder) outside the flue, realize the function of more convenient monitoring of the supplemental combustion, realize the complete decoupling of heat and electricity in the combustion engine power generation heat supply energy storage system, and realize the functions of self-supply of external power, heat storage or heat supply of the system.

A heating system of a building includes: a solar heater configured to receive sunlight and to at least one of absorb heat into a refrigerant and augment heat absorbed into the refrigerant; a compressor configured to compress the refrigerant that vaporized via absorption of heat; a first heat exchanger configured to transfer heat from the refrigerant to water; an expansion valve configured to reduce at least one of a temperature and a pressure of the refrigerant after the transfer of heat from the refrigerant to water; a second heat exchanger configured to transfer heat from water output from the first heat exchanger to air passing the second heat exchanger before flowing into the building; a pump configured to pump the water from the solar heater to the second heat exchanger; and a blower configured to blow air past the second heat exchanger and into the building.

The embodiment of the invention discloses a peak regulation method, device and equipment for a cogeneration unit and a storage medium, and relates to the technical field of electric power, and the method comprises the steps: determining the heat user demand heat of a preset region in a current unit time length based on the heat supply scene information of heat users in the preset region and a predicted outdoor temperature sequence of the preset region in the current unit time length, based on heat supply network heat supply steam information extracted from the combined heat and power generation unit by a heat supply network heat supply system in the preset area in the current unit time, heat source heat supply heat of the preset area in the current unit time is determined; the supply and demand deviation is determined according to the heat user demand heat and the heat source heat supply heat, and when the supply and demand deviation is larger than a set deviation threshold value, a heat storage adjusting valve is opened to start a heat storage mode of the heat supply network heat supply system, and when the heat user demand heat is larger than the heat source heat supply heat, heat stored by the heat supply network heat supply system in the heat storage mode is used for heat supply. And the peak regulation flexibility of the cogeneration unit is improved in a peak load shifting manner.

The present application discloses a control method for an environmental conditioning system, an environmental conditioning system, and a storage medium. The method comprises: the environmental conditioning system comprises an indoor end device. The method comprises: acquiring a thermal storage period; and when the current moment is within the thermal storage period and the indoor temperature of an indoor space where the indoor end device is located satisfies a thermal storage condition, controlling the environmental conditioning system to operate in thermal storage.

To suppress shortage of the number of connection terminals of a control device that controls a hot water supply heater.SOLUTION: A hot water supply heater 1 includes a control device 70A and a switching circuit 91 capable of switching a heating remote controller 73 that becomes in a communication state. The switching circuit 91 includes: a plurality of control device side connection parts A1-A4, B1-B3 having a plurality of first ports A1-A4 and a plurality of second ports B1-B3; first transistors TR1A-TR10A; and second transistors TR1B-TR10B. The switching circuit is configured so that remote controller side connection parts D1-D10 to be communicably connected to input / output terminals T8, T9 out of the plurality of remote controller side connection parts D1-D10 are switched in accordance with a combination of a high-level signal and a low-level signal of a switching signal in the plurality of first ports A1-A4 connected to emitters E of the respective second transistors TR1B-TR10B and the plurality of second ports B1-B3 connected to bases B of the respective second transistors TR1B-TR10B.SELECTED DRAWING: Figure 3

The embodiment of the invention provides a multi-steam-source cooperative frequency modulation combined heat and power generation system and a control method. The system comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a multi-stage regenerative heater, a heating system and a heating steam supply pipeline. A main steam outlet of the boiler is connected to the high-pressure cylinder through a main steam pipeline, a steam exhaust port of the high-pressure cylinder is connected to the intermediate-pressure cylinder through a pipeline, a steam exhaust port of the intermediate-pressure cylinder is connected to the low-pressure cylinder through a pipeline, and a steam exhaust port of the low-pressure cylinder is connected to the generator through a pipeline. A condensate water outlet of the medium-pressure cylinder is communicated to a condensate water inlet of the boiler through a first condensate water pipeline; the heating system is communicated with a steam exhaust port of the medium-pressure cylinder through a heating steam supply pipeline; the multi-stage regenerative heater is arranged on the first condensate water pipeline and connected with the high-pressure cylinder and / or the intermediate-pressure cylinder through steam extraction pipelines, and steam extraction adjusting valves are correspondingly arranged on the steam extraction pipeline between the high-pressure cylinder and the multi-stage regenerative heater and / or the steam extraction pipeline between the intermediate-pressure cylinder and the multi-stage regenerative heater.

The object of the invention is a mixing system (1) comprising at least a boiler (2) and a heat pump (3) through which technical fluids for room heating and / or for domestic water production circulate, and an associated method for managing and controlling the switching cycle (ON / OFF) of said heat pump (3) during domestic hot water (DHW) intake. The method comprises at least the following steps: during said domestic hot water (DHW) water intake, ensuring flow to the heat pump (3) at a flow rate mchHP at least adapted to avoid closing thereof, and ensuring a complete achievement of this DHW water intake.

A thermal system for a facility includes a facility fluid circuit, a ground-source heat pump, and an air-source heat pump. The ground-source heat pump and the air-source heat pump each include a fluid circuit connected to the facility fluid circuit in parallel via a common facility heat exchanger. The ground-source heat pump includes a ground-source heat exchanger for transferring heat between a ground-source working fluid and a downhole fluid of a downhole fluid circuit. The air-source heat pump includes an air-source heat exchanger for transferring heat between an air-source working fluid and an ambient air. Heat can be transferred, at the facility heat exchanger, between the facility fluid and one or more of the ground-source working fluid or the air-source working fluid in order to provide thermal heating, cooling, or both to the facility.

The invention relates to a heat pump hydraulic unit (100) comprising a hydraulic housing (110), a first connection (101) for a heat pump return, a second connection (102) for a heat pump supply, a third connection (103) for a hot water return, a fourth connection (104) for a hot water supply, a fifth connection (105) for a supply of the first heating circuit, a sixth connection (106) for a return of the first heating circuit, a circulation pump (104) coupled to the second connection (102), an electric heating unit (120) in series with the circulation pump (140), and a four-way valve (130) in series with the electric heating unit (120), wherein the four-way valve (130) has a first to fourth connection (131 - 134).